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Atelectasis During Delivery - Comparing Cesarian (c) -Section and Labor

This study has been completed.
Information provided by:
University of Sao Paulo Identifier:
First received: April 21, 2008
Last updated: NA
Last verified: January 2008
History: No changes posted
Pregnancy promotes respiratory system's restrictive component. This study observes the generation of atelectasis during labor.

Condition Intervention
Delivery, Obstetric Cesarean Section Labor Respiration Disorders Atelectasis Radiation: CT scan

Study Type: Observational
Study Design: Observational Model: Case Control
Time Perspective: Prospective
Official Title: CT Study of Atelectasis After Delivery - Comparison Between Cesarian Section and Labor

Resource links provided by NLM:

Further study details as provided by University of Sao Paulo:

Primary Outcome Measures:
  • atelectasis [ Time Frame: 60-120 minutes after delivery ]

Enrollment: 20
Study Start Date: July 2006
Study Completion Date: November 2007
Groups/Cohorts Assigned Interventions
Control - Induced or natural labor under anesthesia
Radiation: CT scan
Thoracic CT scan
Case - Cesarean section under anesthesia
Radiation: CT scan
Thoracic CT scan

Detailed Description:
Pregnancy causes restriction of diaphragm movements as well as higher resistive component to the respiratory system. Spirometry studies have shown that the supine position increases risks of hypoxemia. There seems to be only casual observation regarding the generation of atelectasis during labor.

Ages Eligible for Study:   18 Years to 45 Years   (Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Hospital, obstetric division

Inclusion Criteria:

  • post-anesthesia recovery

Exclusion Criteria:

  • hemodynamic disorder during labor
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Please refer to this study by its identifier: NCT00665405

Sponsors and Collaborators
University of Sao Paulo
Principal Investigator: Joaquim E Vieira, MD, PhD University of Sao Paulo Medical School - FMUSP
  More Information

Responsible Party: Joaquim Edson Vieira, Fisiopatologia Experimental FMUSP Identifier: NCT00665405     History of Changes
Other Study ID Numbers: CAP649-05
Study First Received: April 21, 2008
Last Updated: April 21, 2008

Keywords provided by University of Sao Paulo:
Delivery, obstetric

Additional relevant MeSH terms:
Pulmonary Atelectasis
Respiration Disorders
Lung Diseases
Respiratory Tract Diseases processed this record on August 16, 2017